Do you have it in your ticket history? https://us.battle.net/support/en/case/
36 hours seems long, but being a fellow player I do not know the exact time for tickets at this point. But with the Pandemic, and most of the game staff working from home, the wait times have been up and down for a while, and likely with 2 close together patches, ticket times are up with the increased amount of tickets put in.
In your op it does not mention you originally putting in a ticket, but every customer is treated the same as far as ticket times go.